666458492 has 12 divisors (see below), whose sum is σ = 1332917040. Its totient is φ = 285625056.

The previous prime is 666458479. The next prime is 666458509. The reversal of 666458492 is 294854666.

666458492 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 666458492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11901017 + ... + 11901072.

It is an arithmetic number, because the mean of its divisors is an integer number (111076420).

Almost surely, 2^666458492 is an apocalyptic number.

It is an amenable number.

666458492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666458492 is a wasteful number, since it uses less digits than its factorization.

666458492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23802100 (or 23802098 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 50.

The square root of 666458492 is about 25815.8573748772. The cubic root of 666458492 is about 873.4895266091.

It can be divided in two parts, 6664 and 58492, that added together give a palindrome (65156).

The spelling of 666458492 in words is "six hundred sixty-six million, four hundred fifty-eight thousand, four hundred ninety-two".